Specification:Material: made of high quality stainless steel and chrome plated,durable, strong and rust-proofSize:totally 3 sizes optional,measure dog's neck girth and add 2~3 inches for initial collar length for adjustment.3.0mm diameter link x 16.0" inch length; for max pet neck girth 14.0" inch4.0mm diameter link x 20.0" inch length; for max pet neck girth 18.0" inch5.0mm diameter link x 24.0" inch length; for max pet neck girth 22.0" inchFeature:1.Lustrous and Strong: rust-proof chrome plated steel with silver shine make your dog looks so cool and stand out, high quality material and high-level handmade ensure this choke collar will not tarnish or break.2.Safe and effective: smooth rounded edges for superior comfort, thick chrome plated steel to prevent skin puncture and increase product durability, gentle to firm pull allows this collar controll your dog?s behavior easily, great ideal for gentle effective correctionApplication:1.Corrects bad dog behavior, fixes leash pulling, and helps teach responsive walking habits2.Gentle to firm pull allows this collar controll your dog?s behavior easily, perfect tools for pet training.3.Humane and lifesaving training tool? Has a calming and relaxing effect on trained dogsAbout our services:1.If you are satisfied with our products, please don't forget to leave 5 stars Positive Feedback, we will appreciate your encourage. 2.If you are not satisfied, before you leave the Negative/Neutral feedback, contact us and let me know that, we will resolve the problem till you satisfy.